Toshiba firmware dump labelled only A505, 4 MB in size, most likely the main system BIOS for that Satellite series; no board number or revision is given. A separate EC file with the same model name exists, implying the board uses two firmware chips. Use this one for the main SPI flash, writing it with an external programmer after reading and saving the original. Confirm the chip capacity is 4 MB and check the board label, since several boards can ship under one model name.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @abgm_manutencao_bios. Enginerys does not host this file.
How to open a .bin file
A raw, byte-for-byte image of a flash chip: the main BIOS / UEFI, the embedded-controller (EC) firmware, or both.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →